INOR Michelle Millar, Nora Radu  Thursday, March 31, 2011 

1132 - Nanotechnology for identification of improvised explosives and prevention of peroxides in solvents

Allen Apblett, Nick Materer Department of Chemistry, Oklahoma State University, Stillwater, OK, United States

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Mitigating the significant threat posed by terrorist explosives requires simple, inexpensive test kits for indicating the presence of explosives in the field. We developed a nanoparticulate reagent that can render terrorist and military explosives into non-explosive compounds. Since this reaction is accompanied by a dramatic color change from dark blue to pale yellow, it is a possible to use a similar approach to produce test strips, inks, and sprays that are capable of detecting explosives such as: (1) peroxide based compounds found in improvised explosives and (2) hydrogen peroxide that can be used to synthesize peroxide-based explosives (3) chlorate-based explosives. The technology uses compounds that change color significantly upon contact with peroxides. The response is extremely selective because only sufficiently strong oxidizers can trigger the color change so that most common chemicals will notcause false positives. Both simple test strips and sophisticated optical and electronic sensors are possible. Colorimetric pellets that prevent build-up of peroxides in organic solvents can also be fashioned.


Thursday, March 31, 2011 03:35 PM
Nanoscience (01:30 PM - 05:45 PM)
Location: Anaheim Convention Center
Room: 206 A/B

 

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